httpweb
peter helm archives
ILLUSTRATED CATALOGS ONLINE 2000
http://0700polygraf.blogspot.com/2021/05/httpweb.html
CATALOGUES ONLINE 2000 by PETER HELM
https://web.archive.org/web/20091116221349/http://www.polygraphicum.de/artPOLYGRAPHICUMbookGESAMTKATALOG.html
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https://web.archive.org/web/20091119100326/http://www.polygraphicum.de/index.html
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https://web.archive.org/web/20100119195956/http://www.polygraphicum.de/select.html
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https://web.archive.org/web/20091213183547/http://www.polygraphicum.de/index2.html
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https://web.archive.org/web/20091116221400/http://www.polygraphicum.de/oaindex.html
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https://web.archive.org/web/20090822003911/http://www.polygraphicum.de/OA/oaanfang.html
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https://web.archive.org/web/20090726033754/http://www.polygraphicum.de/OA/vorindex.html
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